[asterisk-bugs] [Asterisk 0011740]: DTMF problem on 1.4.17

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=11740 
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Reported By:                gserra
Assigned To:                
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Project:                    Asterisk
Issue ID:                   11740
Category:                   Channels/chan_sip/Interoperability
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.17 
SVN Branch (only for SVN checkouts, not tarball releases): N/A  
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             01-11-2008 05:55 CST
Last Modified:              02-08-2008 08:40 CST
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Summary:                    DTMF problem on 1.4.17
Description: 
Hi,

when a call is being passed over from AS5400 via PRI to SIP into asterisk,
dtmf is working in 1.4.11 but not on 1.4.17
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 dimas - 02-08-08 08:40  
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I'm not the best help here. The only thing I can think of is that RTP
stream goes through Asterisk while INFO messages are sent directly between
phones. Honestly I'm not even sure it is possible - I'm not very familar
with SIP. 

This can be easily checked if you capture SIP trace on your Snom phone (it
allows this ight from the web UI).

Another thing I can think of (which is real) is that DTMF tones are passed
inband (that is as sounds in the voice stream). That is why you hear them
and that is why Asterisk does not react to them. 

Also, are you sure DTMF mode of Asterisk match to one configured on both
phones? 

Issue History 
Date Modified   Username       Field                    Change               
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02-08-08 08:40  dimas          Note Added: 0081908                          
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